|  | ZHANG, Ruda | July 17, 2022: 
          Replace 'matrix theory' with 'matrix analysis'.
Reorganize notes. More on orthogonal matrices.
          [3738382] | 
      
        |  | ZHANG, Ruda | February 24, 2019: 
          More on matrix theory.
          [46d0a3a] | 
      
        |  | ZHANG, Ruda | February 24, 2019: 
          Digitize Xiaohan's Summary of Matrix Analysis.
          [7d5a29c] |